Display rack



FIG. 1 is a top, front and right side perspective view of a display rack showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top, front and right side perspective view of a second embodiment thereof;

FIG. 4 is a left side elevational view of the embodiment of FIG. 3;

FIG. 5 is a top, front and right side perspective view of a third embodiment thereof; and

FIG. 6 is a left side elevational view of the embodiment of FIG. 5. 

The ornamental design for a display rack, as shown and described. 